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authorDavid S. Miller <davem@davemloft.net>2009-03-26 01:54:46 -0700
committerDavid S. Miller <davem@davemloft.net>2009-03-26 01:54:46 -0700
commit86ee79c3dbd48d7430fd81edc1da3516c9f6dabc (patch)
treed336e9b55772cc7db980620e2100b6e925f2bc64
parent8e0ee43bc2c3e19db56a4adaa9a9b04ce885cd84 (diff)
sparc64: Flush TLB before releasing pages.
tlb_flush_mmu() needs to flush pending TLB entries before processing the mmu_gather ->pages list. Noticed by Benjamin Herrenschmidt. Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--arch/sparc/include/asm/tlb_64.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/sparc/include/asm/tlb_64.h b/arch/sparc/include/asm/tlb_64.h
index ec81cdedef2..ee38e731bfa 100644
--- a/arch/sparc/include/asm/tlb_64.h
+++ b/arch/sparc/include/asm/tlb_64.h
@@ -57,6 +57,8 @@ static inline struct mmu_gather *tlb_gather_mmu(struct mm_struct *mm, unsigned i
static inline void tlb_flush_mmu(struct mmu_gather *mp)
{
+ if (!mp->fullmm)
+ flush_tlb_pending();
if (mp->need_flush) {
free_pages_and_swap_cache(mp->pages, mp->pages_nr);
mp->pages_nr = 0;
@@ -78,8 +80,6 @@ static inline void tlb_finish_mmu(struct mmu_gather *mp, unsigned long start, un
if (mp->fullmm)
mp->fullmm = 0;
- else
- flush_tlb_pending();
/* keep the page table cache within bounds */
check_pgt_cache();